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CVE-2026-111749 Details

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, although impact is limited when applications do not reflect those cookies to a browser. This issue is fixed in version 3.14.4.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/aio-libs/aiohttp/commit/6a07c171ef9f3be583e2907dcd1931372efca8d6	[email protected]
https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4	[email protected]
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gx76-c99x-2c96	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-565	Reliance on Cookies without Validation and Integrity Checking	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 22, 2026	CVE Modified	CISA-ADP
Oct 19, 2026	New CVE Received	[email protected]